大约有 47,000 项符合查询结果（耗时：0.0468秒） [XML]
How do you determine what SQL Tables have an identity column programmatically
...RTY(object_id(TABLE_SCHEMA+'.'+TABLE_NAME), COLUMN_NAME, 'IsIdentity') = 1
order by TABLE_NAME
share
|
improve this answer
|
follow
|
...
git ignore vim temporary files
... Vim will create successively named swap files (.swp, .swo, etc.), so I use .*.sw* in my .gitignore to hide them all.
– Drew Stephens
May 20 '11 at 1:15
33
...
Why were pandas merges in python faster than data.table merges in R in 2012?
....table has time series merge in mind. Two aspects to that: i) multi column ordered keys such as (id,datetime) ii) fast prevailing join (roll=TRUE) a.k.a. last observation carried forward.
I'll need some time to confirm as it's the first I've seen of the comparison to data.table as presented.
UPD...
Nginx not picking up site in sites-enabled?
...! I am trying to move my localhost to my sites-enabled folder which is in /etc/nginx/sites-enabled/default.
3 Answers
...
Running PostgreSQL in memory only
...ils from a properties file, build target properties, environment variable, etc.
It's safe to use an existing PostgreSQL instance you already have databases you care about in, so long as the user you supply to your unit tests is not a superuser, only a user with CREATEDB rights. At worst you'll crea...
What is the difference between “INNER JOIN” and “OUTER JOIN”?
...great and excellent explanation. but why in column b the values are not in order? i.e it is 6,5 not as 5,6?
– Ameer
Mar 4 '13 at 8:39
...
List OrderBy Alphabetical Order
...(x.LastName, y.LastName));
If you mean a new list:
var newList = people.OrderBy(x=>x.LastName).ToList(); // ToList optional
share
|
improve this answer
|
follow
...
How to automatically start a service when running a docker container?
... @KarlMorrison docker exec -it <CONTAINER NAME> mysql /etc/init.d/mysqld restart
– kaiser
Mar 14 '16 at 0:46
1
...
What are the best use cases for Akka framework [closed]
... / HA
Service backend (any industry, any app)
service REST, SOAP, cometd etc
act as message hub / integration layer
scale up, scale out, fault-tolerance / HA
Snap-in concurrency/parallelism ( any app )
Correct
Simple to work with and understand
Just add the jars to your existing JVM project (use...
if/else in a list comprehension
...
You can totally do that. It's just an ordering issue:
[unicode(x.strip()) if x is not None else '' for x in row]
In general,
[f(x) if condition else g(x) for x in sequence]
And, for list comprehensions with if conditions only,
[f(x) for x in sequence if co...